CN109612642A - A kind of sealing property of ball valves test equipment - Google Patents
A kind of sealing property of ball valves test equipment Download PDFInfo
- Publication number
- CN109612642A CN109612642A CN201910091817.7A CN201910091817A CN109612642A CN 109612642 A CN109612642 A CN 109612642A CN 201910091817 A CN201910091817 A CN 201910091817A CN 109612642 A CN109612642 A CN 109612642A
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- Prior art keywords
- ball valve
- tank
- sink
- handle
- ball
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/086—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for valves
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- General Physics & Mathematics (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a kind of sealing property of ball valves test equipments, include the test suite for detecting sealing property of ball valves, for laying in the irony material storage dish of ball valve, and the conveyer belt for conveying irony material storage dish；Test suite includes the sink for being loaded with water；The tank for capableing of longitudinal sliding motion for holding the low-melting alloy of the interface for seal ball-valve is equipped in sink；Tank bottom is equipped with for heating low-melting alloy and then making the liquefied heater of low-melting alloy；Test suite further includes the conveying frame for accessing irony material storage dish, the mobile longitudinal electric push rod of driving conveying frame, horizontal electric push rod；Test suite further includes the air pump being connected to by pipeline with snorkel lower end；The stepper motor that the handle on ball valve can be driven to rotate is installed in sink.By changing the state of low-melting alloy, by ball valve sealing joint, and then sealing property of ball valves is examined.
Description
Technical field
The invention belongs to ball valve technical fields, and in particular to a kind of sealing property of ball valves test equipment.
Background technique
Document number is that the Chinese patent literature of CN105588686A discloses a kind of test big-diameter ball valve sealing effect
Testing equipment including rack, compresses platform and the mobile rack platform for placing ball valve；The compression platform and mobile bracket
Platform is respectively mounted on the rack and can be provided with one and mobile branch with respect to rack transverse shifting, the rack and compression platform
The coaxial end cover of ball valve on body panel；Two end covers are located at the left and right sides of ball valve, the compression platform
End cover can be driven to be tightly connected ball valve and two end covers toward ball valve direction is mobile, described two end covers are set
It is equipped with the test stomata led to inside ball valve.The testing equipment of test big-diameter ball valve sealing effect of the invention tests effect
Rate is high, easy to operate, and is hardly damaged ball valve.
During above-mentioned patent work, Driven by Hydraulic Cylinder compresses platform, end cover is extruded in ball valve both ends, at this time liquid
Cylinder pressure generates biggish pressure to ball valve, otherwise cannot achieve sealing, but since cylinder pressure is excessive, be easy to generate ball valve
Deformation.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the deficienciess of the prior art, ball valve need not be generated by providing
A kind of sealing property of ball valves test equipment of test can be sealed in the case where extruding.
Purpose to realize the present invention, is achieved using following technical scheme: a kind of sealing property of ball valves test equipment, packet
The test suite for detecting sealing property of ball valves is included, is stored up for laying in the irony material storage dish of ball valve, and for conveying irony
The conveyer belt of charging tray.
Each irony material storage dish is equipped with more than two for accommodating the stock chest of ball valve.
The test suite includes the sink for being loaded with water；The tank for capableing of longitudinal sliding motion is equipped in the sink；Institute
State the low-melting alloy that the interface for seal ball-valve is contained in tank.
The tank bottom is equipped with for heating low-melting alloy and then making the liquefied heater of low-melting alloy.
The test suite further includes the conveying frame for accessing irony material storage dish, drives the conveying frame longitudinal movement
Longitudinal electric push rod, and the horizontal electric push rod that the driving longitudinal electric push rod of sink outer walls is moved forward and backward is set.
The horizontal electric push rod is able to drive conveying frame and is moved to right above tank.
Bottom forms snorkel identical with storing slot number in the tank.
The test suite further includes the air pump being connected to by pipeline with snorkel lower end.
Being equipped in the sink can drive the handle on ball valve to rotate, to control the handle drives of ball valve opening and closing
Frame, the sink outer walls are fixedly installed with the stepper motor of driving handle bogie rotation.
As prioritization scheme: the tank lower end periphery forms multiple locating rods；In the sink bottom form with
The positioning sleeve that locating rod is slidably socketed；The positioning sleeve extends to below sink.
It is located at each positioning sleeve periphery in the sink between bottom and tank lower end to be separately installed with for pushing tank
The spring moved upwards.
The tank outer wall is fixedly connected with multiple positioning iron plates；In the sink bottom be fixedly connected with it is multiple can be with
The permanent magnet that positioning iron plate mutually sucks.
The permanent magnet and positioning iron plate are in when sucking state, and the magnetic force between the permanent magnet and positioning iron plate makes
Tank is maintained at stable state in no external force.
As prioritization scheme: conveying frame upper end is equipped with multiple electromagnet；Each electromagnet can respectively with storage
Hopper face.
Conveying frame lower end is located at each electromagnet two sides and is respectively equipped with conducting magnetic column；The conducting magnetic column connects with electromagnet
Touching.
As prioritization scheme: the handle drives frame includes two and rotates coaxially the hand for being connected to inner wall at left and right sides of sink
Handle turntable, the connecting rod being eccentrically set between handle turntable and multiple be arranged in connecting rod turn for driving handle
Dynamic elastic actuating member.
Driving turntable is fixedly connected on the output shaft of the stepper motor；Circumferentially uniformly installation on the driving turntable
There are multiple second magnet.
It is fixedly connected on the handle turntable of the driving turntable and multiple mutually sucks the of transmission with the second magnet
One magnet.
The elastic actuating member is elastic chuck far from connecting rod side；The elastic chuck is to incline far from connecting rod one end
The guide wall being tiltedly arranged；Angle between the guide wall and elastic actuating member is less than 30 °；The elastic chuck is close to connecting rod
One end is the driving wall being obliquely installed；Angle between the driving wall and elastic actuating member is greater than 90 ° and less than 120 °.
As prioritization scheme: the conveyer belt is provided with the ball valve for storing gas leakage far from one side-lower of test suite
Waste material box.
Compared with prior art, the beneficial effects of the present invention are: when being sealed property is tested, controller controlled level electricity
Dynamic push rod is moved a certain distance with the coordination of longitudinal electric push rod, and conveying frame is moved to right above the irony material storage dish on conveyer belt.
Controller control longitudinal electric push rod extends a distance, and conducting magnetic column is contacted with irony material storage dish；Then controller
Work of electromagnet is controlled, conducting magnetic column is mutually sucked with irony material storage dish, and irony material storage dish is moved synchronously with conveying frame.
Then controller controlled level electric pushrod is moved a certain distance with the coordination of longitudinal electric push rod, irony material storage dish position
Right above tank.
Controller controls heater operation setup time, and low-melting alloy liquefaction, then controller control longitudinal electric pushes away
Bar extends a distance, and irony material storage dish is inserted into tank, and ball valve lower part is protruded into low-melting alloy, and low-melting alloy and ball are made
Valve interface is fully sealed, snorkel be inserted into ball valve in, longitudinal electric push rod continues to extend, and tank moves down, positioning iron plate with
Permanent magnet mutually sucks, and tank and ball valve are totally submerged in water, and the water in sink accelerates the cooling of low-melting alloy.
After the cooling time of setting, low-melting alloy is fully cured, and controller control electromagnet stops working, and is controlled
Longitudinal electric push rod is shunk, and conveying frame is separated with irony material storage dish, and conveying frame is moved on the water surface.
Controller controls stepper motor work, and stepper motor driving handle bogie rotates counterclockwise 90 °, and handle is located at
In handle tank, handle drives frame continues to rotate counterclockwise 90 °, and valve is closed.
Then controller control air pump work, air pump is inflated by snorkel into ball valve, so that the air pressure in ball valve increases
Greatly, by observe ball valve outer wall whether have bubble generation, and then judge ball valve whether gas leakage.
If each interface of ball valve has bubble generation, the ball valve gas leakage is proved.
If each interface bubble-free of ball valve generates, prove that the ball valve is air tight.
Each electromagnet respectively corresponds a serial number, records the serial number of the ball valve of gas leakage.
When baroceptor detects that the air pressure in venting cavity reaches setting value, controller control air pump stops working,
Controller control handle drives frame rotates clockwise 90 °, and ball valve is opened, and gas is emerged；Controller control handle drives bridge joint
90 ° of elastic actuating members are rotated clockwise to separate with handle.
Then the elongation of controller control longitudinal electric push rod, conducting magnetic column offset with irony material storage dish, control work of electromagnet,
Conducting magnetic column is mutually sucked with irony material storage dish.
Controller controls longitudinal electric push rod and shrinks, and positioning iron plate is separated with permanent magnet, and tank is moved to top limit position
It sets.
Controller controls heater operation setup time, low-melting alloy liquefaction；Controller controls longitudinal electric push rod and receives
Contracting, irony material storage dish are separated with tank；Controller controlled level electric pushrod is moved a certain distance with the coordination of longitudinal electric push rod,
Irony material storage dish is put back on conveyer belt, controller control electromagnet stops working.
The coordination of controller controlled level electric pushrod and longitudinal electric push rod moves a certain distance, and conducting magnetic column is from the upper of ball valve
In square interface insertion ball valve, then controller controls work of electromagnet corresponding to the ball valve of gas leakage, so that the ball valve of gas leakage
Steel valve ball is mutually sucked with conducting magnetic column；Then controller controlled level electric pushrod and longitudinal electric push rod are coordinated mobile certain
The ball valve of gas leakage is moved to above waste material box by distance, and electromagnet stops working, and the ball valve of gas leakage falls into waste material box (Figure 15
It is shown).
Then conveyer belt works, and the irony material storage dish of the next position is moved to the position opposite with conveying frame, in repetition
Process is stated, it is lasting that being sealed property of ball valve is tested.
The amplitude that horizontal electric push rod and longitudinal electric push rod stretch controls its internal servo motor by controller and rotates
It encloses number to determine, the time that heater stops working is determined by controller timing.
It is immersed in low-melting alloy in the lower interface of ball valve, and after low-melting alloy solidification, due to existing at lower interface
Screw thread, so that the shape that low-melting alloy is formed and is threadedly engaged, when to ventilation interacvity air-filling, due to low-melting alloy and spiral shell
Active force is generated between line so that in the biggish situation of air pressure, low-melting alloy and ball valve without departing from.
After tank submerges in sink, the water in sink plays cooling effect to low-melting alloy, while in sink
Water be able to detect ball valve whether gas leakage.
The common equipment for detecting sealing property of ball valves is that gasket is extruded in ball valve two sides by machine, so as to ball valve
Two interfaces are in sealing state, but since the extruding force that machine generates is excessive, so that there may be deformations for ball valve, influence subsequent
Normal use so that ball valve will not be squeezed, reduce to ball valve but by low-melting alloy come the interface of seal ball-valve
Damage, while save the cost.
Detailed description of the invention
Fig. 1 is the status diagram of conveying frame access irony material storage dish of the present invention.
Fig. 2 is decomposition texture schematic diagram of the invention.
Fig. 3 is the decomposition texture schematic diagram of test suite of the present invention.
Fig. 4 is the structural schematic diagram of irony material storage dish of the present invention.
Fig. 5 is the structural schematic diagram of the sink of the invention.
Fig. 6, Fig. 7 are the structural schematic diagrams of tank of the present invention.
Fig. 8 is the structural schematic diagram of conveying frame of the present invention.
Fig. 9 is the structural schematic diagram of handle drives frame of the present invention.
Figure 10 is the enlarged structure schematic diagram in the portion D in Fig. 9 of the present invention.
Figure 11 is the structural schematic diagram of stepper motor of the present invention.
Figure 12 is structural schematic diagram when handle rotating turret of the present invention is in original state.
Figure 13 is structural schematic diagram when handle rotating turret of the present invention is in clamped condition.
Figure 14 is structural schematic diagram when ball valve of the present invention is in close state.
Structural schematic diagram when Figure 15 is the ball valve of present invention discarding gas leakage.
Figure 16 is the structural schematic diagram of air pump in the embodiment of the present invention 3.
A, test suite；1, sink；11, positioning sleeve；12, permanent magnet；2, tank；20, spring；21, snorkel；22, fixed
Position bar；23, heater tank；24, iron plate is positioned；3, heater；4, handle drives frame；40, stepper motor；401, driving turns
Disk；4011, the second magnet；41, handle turntable；411, the first magnet；42, connecting rod；43, elastic actuating member；431, elastic card
Head；4311, guide wall；4312, wall is driven；5, longitudinal electric push rod；6, horizontal electric push rod；7, conveying frame；71, electromagnet；
72, conducting magnetic column；B, conveyer belt；8, irony material storage dish；81, stock chest；9, air pump；91, the pump housing；92, pump housing permanent magnet；93, it pumps
Body connector sleeve；94, electrode；95, sensing electrode；96, check valve；97, escape pipe；C, waste material box.
Specific embodiment
Embodiment 1
According to Fig. 1 to Figure 15, a kind of sealing property of ball valves test equipment, includes for detecting ball valve described in the present embodiment
The test suite A of leakproofness, for laying in the irony material storage dish 8 of ball valve, and the conveyer belt B for conveying irony material storage dish.
Each irony material storage dish is equipped with more than two for accommodating the stock chest 81 of ball valve；The stock chest is vertical
To perforation；When ball valve is placed in stock chest, ball valve lower part is extended to below stock chest.
The test suite includes the sink 1 for being loaded with water；The tank 2 for capableing of longitudinal sliding motion is equipped in the sink；
The low-melting alloy of the interface for seal ball-valve is contained in the tank；The ball valve is the ball valve that valve casing is metal；Institute
There is the constituent for stating ball valve the spool of permeability magnetic material or ball valve to be made of permeability magnetic material；The tank has thermal coefficient high
Material is made, such as copper.
The ingredient of the low-melting alloy is Pb:Sn:Cd:Bi=25:15:6:54, and fusing point is 72.57 DEG C.
The tank bottom is equipped with for heating low-melting alloy and then making the liquefied heater 3 of low-melting alloy；Institute
Stating heater is ptc heater；When the heater heats, the maximum temperature of heating is higher than low-melting alloy condensing temperature
20-50℃。
The test suite further includes the conveying frame 7 for accessing irony material storage dish, and the conveying frame is driven to vertically move
Longitudinal electric push rod 5, and be arranged in sink outer walls driving longitudinal electric push rod be moved forward and backward horizontal electric push rod 6；
By control longitudinal electric push rod and the co-ordination of horizontal electric push rod, conveying frame or more can be driven, be moved forward and backward.
The horizontal electric push rod is able to drive conveying frame and is moved to right above tank.
Bottom forms snorkel 21 identical with storing slot number in the tank；One snorkel and a ball
Valve connection；The ball valve lower end is protruded into after the low-melting alloy of the fusing in tank, and the upper end of snorkel is closed higher than low melting point
The liquid level of gold.
The snorkel lower end extends to below tank；The tank lower end forms the heater for accommodating heater
Tank 23；Tank outer wall lower end forms the heater connecting hole passed through for the conducting wire of heater.
The test suite further includes the air pump 9 being connected to by pipeline with snorkel lower end.
Being equipped in the sink can drive the handle on ball valve to rotate, to control the handle drives frame of ball valve opening and closing
4, the sink outer walls are fixedly installed with the stepper motor 40 of driving handle bogie rotation.
The tank lower end periphery forms multiple locating rods 22；Bottom forms and locating rod sliding sleeve in the sink
The positioning sleeve 11 connect；The positioning sleeve extends to below sink.
It is located at each positioning sleeve periphery in the sink between bottom and tank lower end to be separately installed with for pushing tank
The spring 20 moved upwards.
By locating rod and positioning sleeve grafting, enable tank longitudinal sliding motion, will not be displaced sideways；In no external force
Under the action of, tank is located above extreme position under the driving of spring, the elastic force of spring should make tank be located at the water surface it
On.
The tank outer wall is fixedly connected with multiple positioning iron plates 24；In the sink bottom be fixedly connected with it is multiple can
The permanent magnet 12 mutually sucked with positioning iron plate.
The permanent magnet and positioning iron plate are in when sucking state, and the magnetic force between the permanent magnet and positioning iron plate makes
Tank is maintained at stable state in no external force.
When permanent magnet and positioning iron plate mutually suck, tank is located below extreme position, and tank and ball valve are complete at this time
It is submerged in water.
Conveying frame upper end is equipped with multiple electromagnet 71；Each electromagnet can respectively with stock chest face.
Conveying frame lower end is located at each electromagnet two sides and is respectively equipped with conducting magnetic column 72；The conducting magnetic column and electromagnetism iron phase
Contact.
There are one for accommodating the space of ball valve between two conducting magnetic columns；When conducting magnetic column lower end and irony material storage dish offset
When, ball valve is between conducting magnetic column, and conducting magnetic column is magnetized when work of electromagnet, so that conducting magnetic column is mutually inhaled with irony material storage dish
Tightly, then control longitudinal electric push rod and horizontal electric push rod work, and then mobile irony material storage dish and ball valve.
The handle drives frame includes two and rotates coaxially the handle turntable 41 for being connected to inner wall at left and right sides of sink, eccentric
Connecting rod 42 between handle turntable is set and multiple elasticity for driving handle rotation being arranged in connecting rod are driven
Dynamic portion 43；The elastic actuating member is made of the sheet metal of elasticity.
Each handle turntable forms rotation axis close to inboard wall of cistern one end center；The inboard wall of cistern form with
The rotation slot of rotation axis rotation connection.
Driving turntable 401 is fixedly connected on the output shaft of the stepper motor；On the driving turntable circumferentially uniformly
Multiple second magnet 4011 are installed.
It is fixedly connected on the handle turntable of the driving turntable and multiple mutually sucks the of transmission with the second magnet
One magnet 411.
The elastic actuating member is elastic chuck 431 far from connecting rod side；The elastic chuck is far from connecting rod one end
For the guide wall 4311 being obliquely installed；Angle between the guide wall and elastic actuating member is less than 30 °；The elastic chuck leans on
Nearly connecting rod one end is the driving wall 4312 being obliquely installed；It is described driving wall and elastic actuating member between angle be greater than 90 ° and
Less than 120 °.
The driving wall, elastic actuating member generate one for accommodating the handle tank of handle between connecting rod.
Under original state, connecting rod is located at tank side, and elastic actuating member is straight up (shown in Figure 12) at this time.
After the ball valve in tank and tank is located below extreme position, stepper motor rotates counterclockwise 90 °, in this process
In, guide wall and handle contact, since guide wall inclined degree is larger, so that elastic actuating member deforms, guide wall and hand
Handle mutually staggers, and after stepper motor rotates counterclockwise 90 °, handle enters in handle tank, and driving wall and connecting rod are located at handle
Two sides, ball valve is in the open state at this time, and handle drives frame is in clamped condition (shown in Figure 13).
Stepper motor continues to rotate counterclockwise 90 °, and connecting rod pushes handle to rotate counterclockwise 90 °, and ball valve, which is in, at this time closes
Closed state (shown in Figure 14).
Stepper motor rotates clockwise 90 °, since the inclined degree of driving wall is larger, so that driving wall offsets with handle
When, driving wall can driving handle rotation, final ball valve is restored to opening state (shown in Figure 13).
Stepper motor continues to rotate clockwise 90 °, in the process, since the handle of ball valve is merely able to the range at 90 °
Interior rotation, handle can not be rotated clockwise with elastic chuck, and driving wall opposite handle sliding forces elastic actuating member to generate shape
Become, so that handle is mutually staggered with driving wall, final handle drives frame restores to original state.
The conveyer belt is provided with the waste material box C of the ball valve for storing gas leakage far from one side-lower of test suite.
The test suite further includes controller；The conveyer belt, horizontal electric push rod, longitudinal electric push rod, heater,
Stepper motor, air pump, each electromagnet are electrically connected with the controller respectively.
A baroceptor is connected on pipeline between the air pump and each snorkel；The baroceptor with
Controller electrical connection；A baroceptor can also be separately installed in each snorkel, so that measurement is more accurate.
When baroceptor detects that the air pressure in snorkel reaches setting value, air pump stops working.
Above and below described in the text, shown in front and rear, left and right reference Fig. 3.
When being sealed property is tested, controller controlled level electric pushrod and longitudinal electric push rod coordinate a mobile spacing
From conveying frame is moved to right above the irony material storage dish on conveyer belt.
Controller control longitudinal electric push rod extends a distance, and conducting magnetic column is contacted with irony material storage dish；Then controller
Work of electromagnet is controlled, conducting magnetic column is mutually sucked with irony material storage dish, and irony material storage dish is moved synchronously with conveying frame.
Then controller controlled level electric pushrod is moved a certain distance with the coordination of longitudinal electric push rod, irony material storage dish position
Right above tank.
Controller controls heater operation setup time, and low-melting alloy liquefaction, then controller control longitudinal electric pushes away
Bar extends a distance, and irony material storage dish is inserted into tank, and ball valve lower part is protruded into low-melting alloy, and low-melting alloy and ball are made
Valve interface is fully sealed, snorkel be inserted into ball valve in, longitudinal electric push rod continues to extend, and tank moves down, positioning iron plate with
Permanent magnet mutually sucks, and tank and ball valve are totally submerged in water, and the water in sink accelerates the cooling of low-melting alloy.
After the cooling time of setting, low-melting alloy is fully cured, and controller control electromagnet stops working, and is controlled
Longitudinal electric push rod is shunk, and conveying frame is separated with irony material storage dish, and conveying frame is moved on the water surface.
Controller controls stepper motor work, and stepper motor driving handle bogie rotates counterclockwise 90 °, and handle is located at
In handle tank, handle drives frame continues to rotate counterclockwise 90 °, and valve is closed.
Then controller control air pump work, air pump is inflated by snorkel into ball valve, so that the air pressure in ball valve increases
Greatly, by observe ball valve outer wall whether have bubble generation, and then judge ball valve whether gas leakage.
If each interface of ball valve has bubble generation, the ball valve gas leakage is proved.
If each interface bubble-free of ball valve generates, prove that the ball valve is air tight.
Each electromagnet respectively corresponds a serial number, records the serial number of the ball valve of gas leakage.
When baroceptor detects that the air pressure in venting cavity reaches setting value, controller control air pump stops working,
Controller control handle drives frame rotates clockwise 90 °, and ball valve is opened, and gas is emerged；Controller control handle drives bridge joint
90 ° of elastic actuating members are rotated clockwise to separate with handle.
Then the elongation of controller control longitudinal electric push rod, conducting magnetic column offset with irony material storage dish, control work of electromagnet,
Conducting magnetic column is mutually sucked with irony material storage dish.
Irony material storage dish and tank are connected into an entirety by the low-melting alloy after solidifying at this time, and controller control is longitudinal
Electric pushrod is shunk, and irony material storage dish is moved up with tank, and positioning iron plate is separated with permanent magnet, and tank is moved to the top limit
Position.
Controller controls heater operation setup time, low-melting alloy liquefaction；Controller controls longitudinal electric push rod and receives
Contracting, irony material storage dish are separated with tank；Controller controlled level electric pushrod is moved a certain distance with the coordination of longitudinal electric push rod,
Irony material storage dish is put back on conveyer belt, controller control electromagnet stops working.
The coordination of controller controlled level electric pushrod and longitudinal electric push rod moves a certain distance, and conducting magnetic column is from the upper of ball valve
In square interface insertion ball valve, then controller controls work of electromagnet corresponding to the ball valve of gas leakage, so that the ball valve of gas leakage
Steel valve ball is mutually sucked with conducting magnetic column；Then controller controlled level electric pushrod and longitudinal electric push rod are coordinated mobile certain
The ball valve of gas leakage is moved to above waste material box by distance, and electromagnet stops working, and the ball valve of gas leakage falls into waste material box (Figure 15
It is shown).
Then conveyer belt works, and the irony material storage dish of the next position is moved to the position opposite with conveying frame, in repetition
Process is stated, it is lasting that being sealed property of ball valve is tested.
The amplitude that horizontal electric push rod and longitudinal electric push rod stretch controls its internal servo motor by controller and rotates
It encloses number to determine, the time that heater stops working is determined by controller timing.
It is immersed in low-melting alloy in the lower interface of ball valve, and after low-melting alloy solidification, due to existing at lower interface
Screw thread, so that the shape that low-melting alloy is formed and is threadedly engaged, when to ventilation interacvity air-filling, due to low-melting alloy and spiral shell
Active force is generated between line so that in the biggish situation of air pressure, low-melting alloy and ball valve without departing from.
After tank submerges in sink, the water in sink plays cooling effect to low-melting alloy, while in sink
Water be able to detect ball valve whether gas leakage.
The common equipment for detecting sealing property of ball valves is that gasket is extruded in ball valve two sides by machine, so as to ball valve
Two interfaces are in sealing state, but since the extruding force that machine generates is excessive, so that there may be deformations for ball valve, influence subsequent
Normal use so that ball valve will not be squeezed, reduce to ball valve but by low-melting alloy come the interface of seal ball-valve
Damage, while save the cost.
Embodiment 2
The present embodiment makes following improvement on the basis of embodiment 1: the basin sidewall upper end is equipped with more than one camera shooting
Head, when shooting air-pump inflating by camera, picture around ball valve has detected whether that bubble is emitted with recognizer automatically
Out, the degree of automation of equipment is improved.
The Chinese patent of Publication No. CN206452471U discloses a kind of visual identifying system, and the present invention can be with this specially
Information disclosed in benefit completes the automatic detection of bubble.
Embodiment 3
According to Figure 16, the present embodiment makes following improvement on the basis of embodiment 1: the air pump includes two pump housings
91, and the pump housing connector sleeve 93 of two pump housing lower parts of connection.
Liquid metal (being in a liquid state under room temperature) is contained in each pump housing；The liquid level of the liquid metal is higher than the pump housing
Connector sleeve.
The pump housing connector sleeve upper and lower ends are separately installed with pump housing permanent magnet 92；Two pump housing permanent magnet opposite side poles
Property is opposite.
The pump housing connector sleeve is fixedly connected with the electrode 94 being in contact with liquid metal different from the two sides of pump housing permanent magnet.
After two electrodes are powered, the liquid metal between two electrodes is considered as conducting wire, has electric current logical on liquid metal
It crosses, while under the magnetic fields that pump housing permanent magnet generates, liquid metal herein is moved by the effect of Ampere force；Two
A electrode is persistently powered, liquid metal constant flow, so that an intracorporal liquid metal of pump is flowed into another pump housing, when
When two electrodes lead to reverse current, the flow direction of liquid metal is opposite.
Each pump housing upper end is respectively equipped with two check valves 96, and a check valve is one-way conduction from top to bottom
The first check valve, another described check valve is the second one-way valve of one-way conduction from bottom to top；Two described second unidirectional
Valve is connected to escape pipe, and the escape pipe is connected to snorkel.
Each pump housing upper end be equipped with the sensing electrode 95 that be connected to inside pump body, rise to when liquid metal and
When sensing electrode is in contact, sensing electrode generates electric signal, leads to reverse current to two motors.
The air pump further includes air pump controller；Each sensing electrode, electrode are electrically connected with air pump controller respectively.
When using air pump, air pump controller is powered to two electrodes, and liquid metal pumps under the action of Ampere force to one
Flowing in vivo, in the process, an intracorporal liquid level of pump increase, so that the intracorporal air pressure of the pump increases, gas passes through second
Check valve, escape pipe enter in snorkel, another pumps intracorporal liquid level and reduces, so that the intracorporal air pressure of the pump reduces, it is extraneous
Gas by the first check valve enter the pump housing in.
When liquid metal and sensing electrode contact, air pump controller detects electric signal, and air pump controller is to two electricity
Extremely lead to reversed electric current, makes liquid metal reverse flow, and repeat the above process.
The above process is repeated several times in air pump, so that air pump persistently has gas output.
Claims (5)
1. a kind of sealing property of ball valves test equipment, it is characterised in that: include the test suite for detecting sealing property of ball valves, use
In the irony material storage dish of deposit ball valve, and the conveyer belt for conveying irony material storage dish；
Each irony material storage dish is equipped with more than two for accommodating the stock chest of ball valve；
The test suite includes the sink for being loaded with water；The tank for capableing of longitudinal sliding motion is equipped in the sink；The appearance
The low-melting alloy of the interface for seal ball-valve is contained in slot；
The tank bottom is equipped with for heating low-melting alloy and then making the liquefied heater of low-melting alloy；
The test suite further includes the conveying frame for accessing irony material storage dish, drives the longitudinal direction of the conveying frame longitudinal movement
Electric pushrod, and the horizontal electric push rod that the driving longitudinal electric push rod of sink outer walls is moved forward and backward is set；
The horizontal electric push rod is able to drive conveying frame and is moved to right above tank；
Bottom forms snorkel identical with storing slot number in the tank；
The test suite further includes the air pump being connected to by pipeline with snorkel lower end；
Being equipped in the sink can drive the handle on ball valve to rotate, to control the handle drives frame of ball valve opening and closing, institute
State the stepper motor that sink outer walls are fixedly installed with the rotation of driving handle bogie.
2. a kind of sealing property of ball valves test equipment as described in claim 1, it is characterised in that: the tank lower end periphery molding
There are multiple locating rods；Bottom forms the positioning sleeve being slidably socketed with locating rod in the sink；The positioning sleeve extends to water
Below slot；
It is located at each positioning sleeve periphery in the sink between bottom and tank lower end to be separately installed with for pushing tank upward
The spring of movement；
The tank outer wall is fixedly connected with multiple positioning iron plates；In the sink bottom be fixedly connected with it is multiple can be with positioning
The permanent magnet that iron plate mutually sucks；
The permanent magnet and positioning iron plate are in when sucking state, and the magnetic force between the permanent magnet and positioning iron plate makes tank
Stable state is maintained in no external force.
3. a kind of sealing property of ball valves test equipment as described in claim 1, it is characterised in that: conveying frame upper end is equipped with more
A electromagnet；Each electromagnet can respectively with stock chest face；
Conveying frame lower end is located at each electromagnet two sides and is respectively equipped with conducting magnetic column；The conducting magnetic column is in contact with electromagnet.
4. a kind of sealing property of ball valves test equipment as described in claim 1, it is characterised in that: the handle drives frame includes two
It is a to rotate coaxially the handle turntable for being connected to inner wall at left and right sides of sink, the connecting rod being eccentrically set between handle turntable, with
And multiple elastic actuating members for driving handle rotation being arranged in connecting rod；
Driving turntable is fixedly connected on the output shaft of the stepper motor；It is circumferentially uniformly equipped on the driving turntable more
A second magnet；
Multiple the first magnetic that transmission is mutually sucked with the second magnet are fixedly connected on the handle turntable of the driving turntable
Iron；
The elastic actuating member is elastic chuck far from connecting rod side；The elastic chuck is that inclination is set far from connecting rod one end
The guide wall set；Angle between the guide wall and elastic actuating member is less than 30 °；The elastic chuck is close to connecting rod one end
For the driving wall being obliquely installed；Angle between the driving wall and elastic actuating member is greater than 90 ° and less than 120 °.
5. a kind of sealing property of ball valves test equipment as described in claim 1, it is characterised in that: the conveyer belt is far from test group
One side-lower of part is provided with the waste material box of the ball valve for storing gas leakage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910091817.7A CN109612642B (en) | 2019-01-30 | 2019-01-30 | Ball valve leakproofness test equipment |
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| CN201910091817.7A CN109612642B (en) | 2019-01-30 | 2019-01-30 | Ball valve leakproofness test equipment |
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| CN112304514A (en) * | 2019-08-01 | 2021-02-02 | 山东珠琳智造股份有限公司 | An automatic detection device for gas tightness of pipeline gas self-closing valve |
| CN115235700A (en) * | 2022-06-13 | 2022-10-25 | 安徽创华自控仪表设备有限公司 | Valve sealing performance test equipment |
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| Publication number | Publication date |
|---|---|
| CN109612642B (en) | 2020-10-30 |
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Inventor after: Han Wenhao Inventor after: Han Xinlin Inventor after: Wang Yin Inventor after: Qu Guangfu Inventor after: Huang Libo Inventor after: Qu Mingkai Inventor before: Qu Guangfu Inventor before: Huang Libo Inventor before: Qu Mingkai |
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Effective date of registration: 20200930 Address after: 224500 No. 2, ring road, industrial park, Binhai County, Jiangsu, Yancheng City Applicant after: JIANGSU SUYAN VALVE MACHINERY Co.,Ltd. Address before: 310018 Yifu Science and Technology Building, East District, China Metrology University, Hangzhou Economic and Technological Development Zone, Zhejiang Province, 1-113 (Ministry of Automation) Applicant before: HANGZHOU TANBU TECHNOLOGY Co.,Ltd. |
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